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2 years ago

3/4 of a number increased by 1/2 is equal to 14. find the number

Mathematics

2 answers:

PIT_PIT [208]2 years ago

6 0

Answer:

Step-by-step explanation:

14*2=28

28(3/4)=21

21/(3/4)=28

28/2=14

lozanna [386]2 years ago

4 0

Answer: Second Option

Step-by-step explanation:

$\frac{3}{4}$ of a number is:

$\frac{3}{4}x$

$\frac{3}{4}$ of a number is increased by $\frac{1}{2}$ is equal to 14

This is:

$\frac{3}{4}x+\frac{1}{2}=14$

Now we solve the equation for the variable x

$\frac{3}{4}x=14-\frac{1}{2}$ → Subtract $\frac{1}{2}$ on both sides of the equation

$\frac{3}{4}x=\frac{27}{2}$

$x=\frac{27}{2}*\frac{4}{3}$ → Multiply by $\frac{4}{3}$ on both sides of the equation

$x=9*2$

$x=18$

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5-12 divided by (6-2)-1 (4-3) multiply by 2+15 divided by (6-1) Show your work

nataly862011 [7]

5-12 ÷(6-2)-1

Do whats in the parenthesis

5-12 ÷4-1

Do division next

5- 3- 1 = 1.

Do the same for the next.

(4-3) x 2+15 ÷(6-1)

1 x 2+15 ÷5

2+15÷5

2+3= 5

3 0

3 years ago

The local newspaper has letters to the editor from 70 people. If this number represents 5% of all of the newspaper's readers, h

Alex Ar [27]

Answer:

This shows us that there are 1400 readers.

Step-by-step explanation:

To work this out you would first need to find how many times 5% goes into 100%, You can do this by dividing 100 by 5, this gives you 20. This is because the whole amount is equivalent to 100%.

To work out the total number of readers you would multiply 70 by 20, this gives you 1400. This is because we know that 70 is equivalent to 5% and that 5% goes into 100% 20. So by multiplying 70 by 20 we are working out the total (100%), and that this shows us there are 1400 readers.

1) Divide 100 by 5.

$100/5=20$